MESON Chess Problem Database

Problem Display
PID: 22175 (r3k2r/7p/p3K3/8/8/6Q1/8/8 w qk - 0 1)

Speckmann, Werner

Problemnoter, 1960

r3k2r/7p/p3K3/8/8/6Q1/8/8

#2

2 + 5

3295 Einfuhrung in die Welt des Schachproblem 1984

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Qb8#
    • 1...Rb8
      • 2.Qxb8#
    • 1...Rg8
      • 2.Qxg8#
  • Tries
    • 1.Qc7?
      • threat
        • 2.Qe7#
      • 1...Kf8
        • 2.Qf7#
      • 1...Ra7
        • 2.Qb8#
        • 2.Qc8#
      • 1...0-0!
    • 1.Qg7?
      • threat
        • 2.Qxh8#
        • 2.Qe7#
      • 1...Kd8
        • 2.Qd7#
      • 1...Ra7
        • 2.Qxh8#
      • 1...Rf8
        • 2.Qd7#
        • 2.Qe7#
      • 1...Rg8
        • 2.Qe7#
        • 2.Qxg8#
      • 1...0-0-0!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qe7#
      • 1...Ra7
        • 2.Qb8#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • R(c);N_GUARD::QAR(A)
    • R(c);N_GUARD::QAR(A),XR(c)
    • R(e);N_GUARD::QAR2(A),XR(e)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(d);P-FLIGHT::QAR1(A)
      • Refutation
        • K(d);0-0
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(d);P-FLIGHT::QAR1(A)
        • R(c);::QAR(A),XR(e)
      • Refutation
        • K(d);0-0-0
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • R(c);N_GUARD::QAR(A)
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